What Is DC01 ZE Electro Galvanized Steel Sheet?
EN 10152 DC01+ZE electro galvanized steel sheet is the most mainstream commercial-grade electrolytic zinc-coated cold rolled flat steel regulated under the latest European standard EN 10152:2017, material base number 1.0330, widely abbreviated as DC01+ZE EG steel across global metal procurement markets.
Differentiated from hot-dip galvanized (HDG GI) steel via ambient-temperature electrochemical zinc deposition, DC01+ZE features ultra-uniform thin pure zinc coating, premium mirror-like flat surface, outstanding cold forming, weldability and superior paint adhesion, making it a foundational raw material for home appliance, automotive interior components, electrical cabinet, precision metal stamping and indoor construction accessory industries worldwide.
EN 10152 Standard Framework
EN 10152 is the unified European technical delivery specification for electrolytically zinc coated cold rolled flat steel products specially designed for cold forming.
- DC01+ZE: Commercial forming grade (CQ), target for general bending, shallow stamping (core product of this article)
- DC03+ZE: Deep drawing grade (DQ), for medium-depth stamped parts
- DC05/DC06+ZE: Extra deep drawing (EDDQ), automotive deep-drawn housings
- DC07+ZE: Super deep drawing ultra-low carbon EG steel
The suffix "+ZE" exclusively stands for Electrolytic Zinc Coating, separating from "+Z" (hot-dip zinc coating regulated by EN10346); ZE coating is pure zinc without Fe-Zn alloy interlayer formed during high-temperature HDG production, the core technical marker distinguishing electrogalvanized substrate.
Properties according to DIN EN 10 152
Steel type
| Short designation | VDA239-100* | Surface finish | Material number |
| DC01 | CR1 | +ZE | 1.0330 |
* Comparative grade, therefore slight deviations from DIN EN values possible
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DC01+ZE | 1.0330: Mechanical properties (transverse)
| Yield strength R1) MPa e max. | Tensile strength Rm MPa | Elongation at fracture2) % A80 | Anisotropy r903)4) min. | Strain hardening exponent n903) min. |
| 280 | 270–410 | 28 | - | - |
-
DC01+ZE | 1.0330: Chemical composition (heat analysis)
| Percentage by weight % max. | ||||
| C | P | S | Mn | Ti |
| 0.12 | 0.045 | 0.0 | 0.60 | - |
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Standard Mechanical Properties of DC01+ZE
Yield Strength (Rp0.2): Max 280MPa; for thickness ≤0.7mm, upper limit rises 20MPa; ≤0.5mm increases 40MPa due to cold rolling work hardening
Tensile Strength (Rm): 270–410MPa
Elongation (A80): ≥28%; thinner gauge (＜0.7mm) allows minus 2~4% elongation tolerance
Forming Index n-value: ≥0.18 (only valid for thickness ≥0.5mm)
Density: Fixed 7.85g/cm³, consistent with conventional carbon steel
This balanced mechanical property enables DC01+ZE to finish 90° sharp bending, shallow embossing and routine laser cutting without pre-heat treatment, greatly lowering downstream manufacturers' secondary processing cost.
Mainstream ZE Coating Specifications for DC01+ZE
| Coating Grade | Single Side Zinc Mass(g/m²) | Equivalent Zinc Thickness(μm) | Common Application Scenario |
|---|---|---|---|
| ZE25/25 | 18 | ~2.5 | Thin-gauge electrical accessories, indoor small stamped parts |
| ZE50/50 | 36 | ~5.0 | Home appliance inner shells, distribution box panels (most popular specification, 65% market demand) |
| ZE70/70 | 50 | ~7.0 | Mid-end automotive interior brackets, cabinet housing |
| ZE100/100 | 72 | ~10.0 | High-humidity indoor equipment, pre-painted base substrate |
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DC01+ZE vs Hot-Dip Galvanized
| Performance Index | EN10152 DC01+ZE Electrogalvanized | EN10346 DC01+Z Hot-Dip Galvanized |
|---|---|---|
| Coating Structure | Pure zinc layer only (3~12μm), no Fe-Zn alloy layer | Zinc+Fe-Zn alloy composite layer (45~200μm) |
| Surface Appearance | Smooth mirror finish, no spangle zinc flower | Matte rough surface with natural spangle crystal |
| Paint Adhesion | Excellent (Ra=0.4~0.8μm), top-tier pre-paint substrate | Medium adhesion, extra phosphating cost required |
| Formability | Superior, low coating powdering during stamping | High coating peeling risk under sharp bending |
| Salt Spray (ASTM B117, no white rust) | ZE50/50 ≈240H | Z275 HDG ≥720H |
| Typical Application | Indoor appliance, auto interior, electrical cabinet | Outdoor construction, solar bracket, outdoor guardrail |
Key takeaway: DC01+ZE is prioritized for indoor high-precision forming & pre-painting projects; HDG GI targets outdoor heavy anti-corrosion scenarios, their application fields are highly complementary without full substitution.
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Application Scenarios of DC01+ZE Steel Sheet
1. Home Appliance Industry
The dominant consumption field for DC01+ZE ZE50/50 specification: refrigerator inner liner, washing machine inner shell, air-condition evaporator casing, microwave oven internal structural frame, small kitchen appliance housing. Smooth surface reduces post-spray cost; uniform zinc coating prevents internal component rust under long-term closed humid environment, most home appliance OEM factories in Vietnam, Thailand, Poland and Turkey sign annual framework procurement contracts for DC01+ZE bulk coils.
2. Automotive Interior Parts Manufacturing
Applied for car instrument panel brackets, door inner plastic-reinforced steel insert, seat frame stamping part, wiring harness protection cover, EV battery inner fixed shell. DC01+ZE's outstanding weldability and forming performance match auto OEM's high dimensional tolerance standard; multiple European tier-1 auto component suppliers replace expensive imported Japanese SECC JIS G3313 EG steel with cost-efficient EN-standard DC01+ZE to cut raw material expense by 8~12%.
3. Electrical & Distribution Equipment
Low-voltage distribution box shell, PLC electrical cabinet body, terminal junction box, transformer auxiliary fixed parts, charging pile indoor control cabinet. Anti-fingerprint treated DC01+ZE grade is preferred for exposed cabinet panels to maintain neat appearance during equipment assembly and after-sales maintenance.
4. Precision Hardware & Indoor Construction Accessories
Furniture metal connecting bracket, indoor lamp holder stamping base, elevator small inner accessory, air duct thin steel sheet, indoor decoration metal profile. Small-sized cut DC01+ZE sheets and slit narrow strips are popular among Southeast Asian precision hardware factories for small-batch customized orders.
Frequently Asked Questions
Q1: Can DC01+ZE replace Japanese SECC electrogalvanized steel directly?
A: Yes. DC01+ZE (EN10152 CQ grade) is mechanical-performance equivalent to JIS G3313 SECC, interchangeable for most general stamping projects; only ultra-deep drawing application needs DC05+ZE matching SECD/SECE grade.
Q2: What's the maximum bending angle of DC01+ZE without coating cracking?
A: Standard ZE50/50 DC01+ZE can finish 180° close bending with inner radius equal to sheet thickness under room temperature without zinc layer peeling, the core advantage for bending component manufacturers.
Q3: Is DC01+ZE suitable for outdoor exposed installation?
A: Not recommended for direct long-term outdoor use (ISO9223 C3/C4 industrial atmosphere). ZE thin zinc coating's anti-rust lifespan is only 7~10 years; choose HDG DC01+Z or pre-painted DC01+ZE after full topcoat for outdoor application.
Q4: Can suppliers provide custom slit narrow strips from master DC01+ZE coils?
A: Yes, professional steel processor can slit master coils into 50mm+ customized narrow strips with ±0.1mm width tolerance per client's stamping machine requirement.
Q5: What is the standard packing for sea export DC01+ZE sheets/coils?
A: Sheets: Wooden pallet + waterproof plastic film + iron binding strip; Coils: Inner waterproof kraft paper + outer metal guard plate + steel hoop fixing, fit standard 20GP/40GP container loading.
Q6: How long is the production lead time for bulk DC01+ZE order?
A: Standard in-stock specification delivers within 3~7 working days; customized coating/post-treatment bulk order lead time 15~25 working days based on factory production schedule.
Q7: Does DC01+ZE support spot welding and gas shielded welding?
A: Excellent weldability for both spot resistance welding and CO2 gas shielded welding; ultra-low carbon base avoids welding pore and crack defect, widely used for welded metal assemblies.
Q8: What test certificates can be provided for customs clearance and incoming inspection?
A: Factory MTC mill test certificate complying EN10152, SGS third-party chemical & mechanical inspection report, salt spray test report, CE certification for EU customs clearance.
